<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta http-equiv="Cache-Control" content="no-siteapp">
  <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
  <meta name="renderer" content="webkit">

  
  <title>Android14 StatusBar顶部图标加载流程 | 龙之叶的博客</title>

  <link rel="shortcut icon" href="/images/favicon.png">
  <link rel="alternate" href="/atom.xml" title="龙之叶的博客" type="application/atom+xml">
  <meta name="description" content="Android14 StatusBar顶部图标加载流程">
<meta property="og:type" content="article">
<meta property="og:title" content="Android14 StatusBar顶部图标加载流程">
<meta property="og:url" content="http://longzhiye.top/2024/01/28/2024-01-28/index.html">
<meta property="og:site_name" content="龙之叶的博客">
<meta property="og:description" content="Android14 StatusBar顶部图标加载流程">
<meta property="og:locale" content="zh_CN">
<meta property="article:published_time" content="2024-01-27T16:00:00.000Z">
<meta property="article:modified_time" content="2024-08-29T02:40:34.921Z">
<meta property="article:author" content="龙之叶">
<meta property="article:tag" content="Android">
<meta property="article:tag" content="framework">
<meta name="twitter:card" content="summary">

  <meta name="keywords" content=",Android,framework">
  <meta name="format-detection" content="telephone=no,email=no">
  <meta name="theme-color" content="#9C27B0">

  <meta name="mobile-web-app-capable" content="yes">
  <meta name="application-name" content="龙之叶的博客">
  <meta name="msapplication-starturl" content="http://longzhiye.top/2024/01/28/2024-01-28/">
  <meta name="msapplication-navbutton-color" content="#9C27B0">
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-title" content="龙之叶的博客">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <link rel="apple-touch-icon" href="/images/favicon.png">

  
    <link rel="canonical" href="http://longzhiye.top/2024/01/28/2024-01-28/">
  

  
  

  
  
  

  
<link rel="stylesheet" href="/css/mdui.css">
<link rel="stylesheet" href="/css/style.css">

  
<link rel="stylesheet" href="/custom.css">

<meta name="generator" content="Hexo 5.4.2"></head>

<body class="mdui-appbar-with-toolbar mdui-theme-primary-indigo mdui-theme-accent-pink">
  <script>var a=localStorage.getItem("mdui-theme-layout-dark");if(a){document.getElementsByTagName("body")[0].className+=" mdui-theme-layout-dark"};</script>
  <script>if(window.matchMedia&&window.matchMedia("(prefers-color-scheme: dark)").matches){document.getElementsByTagName("body")[0].className+=" mdui-theme-layout-dark"};</script>
  <script>var a=localStorage.getItem("mdui-drawer-close");if(!a){document.getElementsByTagName("body")[0].className+=" mdui-drawer-body-left"};</script>
  <header id="header" class="mdui-appbar mdui-appbar-fixed mdui-appbar-scroll-hide mdui-appbar-inset">
  <div class="mdui-toolbar mdui-color-theme">
    <a href="javascript:;" class="mdui-btn mdui-btn-icon" mdui-drawer="{target: '#sidebar', swipe: true}"><i class="mdui-icon material-icons">menu</i></a>
    <a href="/" class="mdui-typo-headline">龙之叶的博客</a>
    <div class="mdui-toolbar-spacer"></div>
    <a href="javascript:;" class="mdui-btn mdui-btn-icon" mdui-dialog="{target: '#search'}" mdui-tooltip="{content: '搜索'}"><i class="mdui-icon material-icons">search</i></a>
	<!--
    <a href="/atom.xml" class="mdui-btn mdui-btn-icon" mdui-tooltip="{content: 'RSS'}"><i class="mdui-icon material-icons">rss_feed</i></a>
	-->
  </div>
</header>
<div class="mdui-dialog" id="search">
  
    <div class="search-form">
      <input type="search" class="search-form-input" placeholder="请输入关键字">
    </div>
    <div class="search-result" data-resource="/search.xml"></div>
  
</div>

  <aside id="sidebar" class="mdui-drawer mdui-drawer-full-height">
  <script>var a=localStorage.getItem("mdui-drawer-close");if(a){document.getElementById("sidebar").className+=" mdui-drawer-close"};</script>
  <div class="mdui-grid-tile">
    <img src="/images/banner.png" style="height: 160px;">
    <img src="/images/avatar.png" class="avatar-animation" style="position: absolute; top: 10%; left: 24px; width: 64px; height: 64px; border: 2px solid #fff; border-radius: 50%;background-color:#fff;">
    <div class="mdui-grid-tile-actions">
      <div class="mdui-grid-tile-text">
        <div class="mdui-grid-tile-title">龙之叶</div>
        <div class="mdui-grid-tile-subtitle"><i class="mdui-icon material-icons">art_track</i>生命不息，折腾不止</div>
      </div>
      
        <div class="mdui-grid-tile-buttons">
          <a href="mailto:longzhiye163@163.com" class="mdui-btn mdui-btn-icon" mdui-tooltip="{content: 'longzhiye163@163.com'}"><i class="mdui-icon material-icons">email</i></a>
        </div>
      
    </div>
  </div>

  <div class="mdui-list" mdui-collapse="{accordion: true}">
    <a href="/" class="mdui-list-item mdui-ripple">
      <i class="mdui-list-item-icon mdui-icon material-icons mdui-text-color-blue">home</i>
      <div class="mdui-list-item-content">主页</div>
    </a>
    <div class="mdui-collapse-item">
      <script>var a=localStorage.getItem("mdui-collapse-item-0");if(a){document.getElementsByClassName("mdui-collapse-item")[0].className+=" mdui-collapse-item-open"};</script>
      <div class="mdui-collapse-item-header mdui-list-item mdui-ripple">
        <i class="mdui-list-item-icon mdui-icon material-icons mdui-text-color-deep-orange">archive</i>
        <div class="mdui-list-item-content">归档</div>
        <i class="mdui-collapse-item-arrow mdui-icon material-icons">keyboard_arrow_down</i>
      </div>
      <div class="mdui-collapse-item-body mdui-list mdui-list-dense">
        
        <a class="mdui-ripple sidebar_archives-link" href="/archives/2025/07/">七月 2025<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2025/06/">六月 2025<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2025/03/">三月 2025<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2025/02/">二月 2025<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2025/01/">一月 2025<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2024/10/">十月 2024<span class="mdui-ripple sidebar_archives-count">7</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2024/09/">九月 2024<span class="mdui-ripple sidebar_archives-count">4</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2024/08/">八月 2024<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2024/03/">三月 2024<span class="mdui-ripple sidebar_archives-count">5</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2024/02/">二月 2024<span class="mdui-ripple sidebar_archives-count">11</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2024/01/">一月 2024<span class="mdui-ripple sidebar_archives-count">9</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/12/">十二月 2023<span class="mdui-ripple sidebar_archives-count">10</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/11/">十一月 2023<span class="mdui-ripple sidebar_archives-count">8</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/10/">十月 2023<span class="mdui-ripple sidebar_archives-count">8</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/09/">九月 2023<span class="mdui-ripple sidebar_archives-count">3</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/08/">八月 2023<span class="mdui-ripple sidebar_archives-count">6</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/06/">六月 2023<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/05/">五月 2023<span class="mdui-ripple sidebar_archives-count">4</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/04/">四月 2023<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/03/">三月 2023<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2023/02/">二月 2023<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2022/09/">九月 2022<span class="mdui-ripple sidebar_archives-count">7</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2022/08/">八月 2022<span class="mdui-ripple sidebar_archives-count">4</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2017/04/">四月 2017<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2017/03/">三月 2017<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2017/02/">二月 2017<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2017/01/">一月 2017<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2016/12/">十二月 2016<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2016/11/">十一月 2016<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2016/10/">十月 2016<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/archives/2016/08/">八月 2016<span class="mdui-ripple sidebar_archives-count">1</span></a>
        
      </div>
    </div>
    <div class="mdui-collapse-item">
      <script>var a=localStorage.getItem("mdui-collapse-item-1");if(a){document.getElementsByClassName("mdui-collapse-item")[1].className+=" mdui-collapse-item-open"};</script>
      <div class="mdui-collapse-item-header mdui-list-item mdui-ripple">
        <i class="mdui-list-item-icon mdui-icon material-icons mdui-text-color-green">class</i>
        <div class="mdui-list-item-content">分类</div>
        <i class="mdui-collapse-item-arrow mdui-icon material-icons">keyboard_arrow_down</i>
      </div>
      <div class="mdui-collapse-item-body mdui-list mdui-list-dense">
        
        <a class="mdui-ripple sidebar_archives-link" href="/categories/%E6%8A%80%E6%9C%AF/">技术<span class="mdui-ripple sidebar_archives-count">98</span></a><a class="mdui-ripple sidebar_archives-link" href="/categories/%E7%94%9F%E6%B4%BB/">生活<span class="mdui-ripple sidebar_archives-count">3</span></a><a class="mdui-ripple sidebar_archives-link" href="/categories/%E8%B5%84%E8%AE%AF/">资讯<span class="mdui-ripple sidebar_archives-count">4</span></a><a class="mdui-ripple sidebar_archives-link" href="/categories/%E9%80%9A%E7%9F%A5/">通知<span class="mdui-ripple sidebar_archives-count">4</span></a>
        
      </div>
    </div>
    <div class="mdui-collapse-item">
      <script>var a=localStorage.getItem("mdui-collapse-item-2");if(a){document.getElementsByClassName("mdui-collapse-item")[2].className+=" mdui-collapse-item-open"};</script>
      <div class="mdui-collapse-item-header mdui-list-item mdui-ripple">
        <i class="mdui-list-item-icon mdui-icon material-icons mdui-text-color-brown">bookmark</i>
        <div class="mdui-list-item-content">标签</div>
        <i class="mdui-collapse-item-arrow mdui-icon material-icons">keyboard_arrow_down</i>
      </div>
      <div class="mdui-collapse-item-body mdui-list mdui-list-dense">
        
        <a class="mdui-ripple sidebar_archives-link" href="/tags/ANR/" rel="tag">ANR<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/APP/" rel="tag">APP<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Android/" rel="tag">Android<span class="mdui-ripple sidebar_archives-count">89</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Android12/" rel="tag">Android12<span class="mdui-ripple sidebar_archives-count">3</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Android13/" rel="tag">Android13<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Android14/" rel="tag">Android14<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/AndroidStudio/" rel="tag">AndroidStudio<span class="mdui-ripple sidebar_archives-count">3</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/AutoDraw/" rel="tag">AutoDraw<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Crash/" rel="tag">Crash<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Foxmail/" rel="tag">Foxmail<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Framework/" rel="tag">Framework<span class="mdui-ripple sidebar_archives-count">20</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/GPS%E8%BD%A8%E8%BF%B9%E5%9B%BE/" rel="tag">GPS轨迹图<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Git/" rel="tag">Git<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/GitHub/" rel="tag">GitHub<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Google/" rel="tag">Google<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Hexo/" rel="tag">Hexo<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Java/" rel="tag">Java<span class="mdui-ripple sidebar_archives-count">3</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Kernel/" rel="tag">Kernel<span class="mdui-ripple sidebar_archives-count">4</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Launcher/" rel="tag">Launcher<span class="mdui-ripple sidebar_archives-count">17</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Lib/" rel="tag">Lib<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Linux/" rel="tag">Linux<span class="mdui-ripple sidebar_archives-count">18</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Markdown/" rel="tag">Markdown<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Material-Design/" rel="tag">Material Design<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/OS-X/" rel="tag">OS X<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/OTA/" rel="tag">OTA<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/QuickTime/" rel="tag">QuickTime<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/SSH/" rel="tag">SSH<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Settings/" rel="tag">Settings<span class="mdui-ripple sidebar_archives-count">6</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/SystemUI/" rel="tag">SystemUI<span class="mdui-ripple sidebar_archives-count">19</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Ubuntu/" rel="tag">Ubuntu<span class="mdui-ripple sidebar_archives-count">7</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/WPS/" rel="tag">WPS<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Wifi/" rel="tag">Wifi<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/WindTerm/" rel="tag">WindTerm<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/Windows/" rel="tag">Windows<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/androidmk/" rel="tag">androidmk<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/blog/" rel="tag">blog<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/build/" rel="tag">build<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/feel/" rel="tag">feel<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/framework/" rel="tag">framework<span class="mdui-ripple sidebar_archives-count">50</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/git/" rel="tag">git<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/inotify/" rel="tag">inotify<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/life/" rel="tag">life<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/ninja/" rel="tag">ninja<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/rsync/" rel="tag">rsync<span class="mdui-ripple sidebar_archives-count">2</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/standard/" rel="tag">standard<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/test/" rel="tag">test<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/%E4%BC%81%E4%B8%9A%E5%BE%AE%E4%BF%A1/" rel="tag">企业微信<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F/" rel="tag">操作系统<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/%E6%B5%8B%E8%AF%95/" rel="tag">测试<span class="mdui-ripple sidebar_archives-count">1</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/%E6%BA%90%E7%A0%81/" rel="tag">源码<span class="mdui-ripple sidebar_archives-count">3</span></a><a class="mdui-ripple sidebar_archives-link" href="/tags/%E7%94%9F%E6%B4%BB%E6%84%9F%E6%82%9F/" rel="tag">生活感悟<span class="mdui-ripple sidebar_archives-count">1</span></a>
        
      </div>
    </div>
    <a href="/about" class="mdui-list-item mdui-ripple">
      <i class="mdui-list-item-icon mdui-icon material-icons mdui-text-color-purple">person</i>
      <div class="mdui-list-item-content">关于</div>
    </a>
  </div>

  <div class="mdui-divider"></div>

  <div class="mdui-list" mdui-collapse="{accordion: true}">
    
      <a href="/timeline" class="mdui-list-item mdui-ripple">时间轴</a>
    
    <div class="mdui-collapse-item">
      <script>var a=localStorage.getItem("mdui-collapse-item-3");if(a){document.getElementsByClassName("mdui-collapse-item")[3].className+=" mdui-collapse-item-open"};</script>
      <div class="mdui-collapse-item-header mdui-list-item mdui-ripple">
        <div class="mdui-list-item-content">友情链接</div>
        <i class="mdui-list-item-icon mdui-icon material-icons">link</i>
      </div>
      <div class="mdui-collapse-item-body mdui-list mdui-list-dense">
        
          <a href="http://www.niemingzhao.top" target="_blank" class="mdui-list-item mdui-p-l-2 mdui-text-color-theme-accent mdui-ripple" style="justify-content: center;">聂明照的博客</a>
        
        
      </div>
    </div>
  </div>
</aside>

  <main id="main" class="mdui-m-t-5 fadeIn animated">
  
<link rel="stylesheet" href="//cdn.bootcdn.net/ajax/libs/fancybox/3.5.7/jquery.fancybox.min.css">

  <style>#main article .mdui-card-content .center-block{display:block!important;margin-right:auto!important;margin-left:auto!important}</style>
  <style>#main article .mdui-card-content .text-center{text-align:center!important}</style>
  <article class="mdui-card mdui-m-b-5">
    <header class="mdui-card-media">
      <img src="/images/random/material-3.png" style="max-height: 240px;">
      <div class="mdui-card-media-covered">
        <div class="mdui-card-primary">
          <div class="mdui-card-primary-title">Android14 StatusBar顶部图标加载流程</div>
          <div class="mdui-card-primary-subtitle"><i class="iconfont">&#xe697;</i> 2024-01-28 / <i class="iconfont">&#xe601;</i> 龙之叶 &nbsp;&nbsp; <span id="busuanzi_container_page_pv" style="display: none;"><i class="iconfont">&#xe7fd;</i> <span id="busuanzi_value_page_pv"></span></span></div>
        </div>
      </div>
      <div class="mdui-card-menu">
        
          <button class="mdui-btn mdui-btn-icon mdui-text-color-white" mdui-menu="{target: '#qrcode', align: 'right'}"><i class="mdui-icon material-icons">devices</i></button>
          <ul class="mdui-menu" id="qrcode">
            
              <li class="mdui-menu-item"><a class="mdui-text-center mdui-ripple">发送到手机</a></li>
            
            <li class="mdui-menu-item" disabled>
              
                <img src="//qr.liantu.com/api.php?w=246&m=10&text=http://longzhiye.top/2024/01/28/2024-01-28/">
              
            </li>
          </ul>
        
        
          <button class="mdui-btn mdui-btn-icon mdui-text-color-white" mdui-menu="{target: '#share_menu', align: 'right'}"><i class="mdui-icon material-icons">share</i></button>
          <ul class="mdui-menu" id="share_menu">
            <li class="mdui-menu-item">
              <a href="https://service.weibo.com/share/share.php?appkey=&title=Android14 StatusBar顶部图标加载流程&url=http://longzhiye.top/2024/01/28/2024-01-28/&pic=http://longzhiye.top/images/favicon.png&searchPic=false&style=simple" target="_blank" class="mdui-ripple">分享到 Weibo</a>
            </li>
            <li class="mdui-menu-item">
              <a href="https://twitter.com/intent/tweet?text=Android14 StatusBar顶部图标加载流程&url=http://longzhiye.top/2024/01/28/2024-01-28/&via=龙之叶" target="_blank" class="mdui-ripple">分享到 Twitter</a>
            </li>
            <li class="mdui-menu-item">
              <a href="https://www.facebook.com/sharer/sharer.php?u=http://longzhiye.top/2024/01/28/2024-01-28/" target="_blank" class="mdui-ripple">分享到 Facebook</a>
            </li>
            <li class="mdui-menu-item">
              <a href="https://plus.google.com/share?url=http://longzhiye.top/2024/01/28/2024-01-28/" target="_blank" class="mdui-ripple">分享到 Google+</a>
            </li>
            <li class="mdui-menu-item">
              <a href="https://www.linkedin.com/shareArticle?mini=true&url=http://longzhiye.top/2024/01/28/2024-01-28/&title=Android14 StatusBar顶部图标加载流程" target="_blank" class="mdui-ripple">分享到 LinkedIn</a>
            </li>
            <li class="mdui-menu-item">
              <a href="https://connect.qq.com/widget/shareqq/index.html?site=龙之叶的博客&title=Android14 StatusBar顶部图标加载流程&pics=http://longzhiye.top/images/favicon.png&url=http://longzhiye.top/2024/01/28/2024-01-28/" target="_blank" class="mdui-ripple">分享到 QQ</a>
            </li>
            <li class="mdui-menu-item">
              <a href="https://telegram.me/share/url?url=http://longzhiye.top/2024/01/28/2024-01-28/&text=Android14 StatusBar顶部图标加载流程" target="_blank" class="mdui-ripple">分享到 Telegram</a>
            </li>
          </ul>
        
      </div>
    </header>
    <div class="mdui-card-content mdui-typo">
      <h3 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h3><p>说到 StatusBar 的顶部图标，就不得不提起以下两个类：</p>
<ul>
<li>PhoneStatusBarPolicy：定义了系统通知图标的设置策略；</li>
<li>StatusBarSignalPolicy：定义了状态栏网络信号策略；</li>
</ul>
<p><strong>StatusBarSignalPolicy</strong> 前面有过分析，这次以 PhoneStatusBarPolicy 为例进行分析；<br>PhoneStatusBarPolicy 在 CentralSurfacesImpl 的 start() 方法里初始化：<br><strong>frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java</strong></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Override</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">start</span><span class="params">()</span> &#123;</span><br><span class="line">    <span class="comment">// 省略部分代码......</span></span><br><span class="line">    mStatusBarSignalPolicy.init();  <span class="comment">// 这里Android 14 与前面 Android 11 的初始化方法有点不同。</span></span><br><span class="line">    <span class="comment">// 创建整个SystemUI视图并添加到WindowManager中</span></span><br><span class="line">    createAndAddWindows(result);<span class="comment">//这个重点方法，创建相关的视图</span></span><br><span class="line">    <span class="comment">// 省略部分代码......</span></span><br><span class="line">    <span class="comment">// 调用图标策略来显示更新所有图标。</span></span><br><span class="line">    mIconPolicy.init();</span><br><span class="line">    <span class="comment">// 省略部分代码......</span></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>这里直接看PhoneStatusBarPolicy#init() 这个方法很关键<br><strong>frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java</strong></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">init</span><span class="params">()</span> &#123;</span><br><span class="line">    <span class="comment">// 注册广播监听。</span></span><br><span class="line">    <span class="type">IntentFilter</span> <span class="variable">filter</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">IntentFilter</span>();</span><br><span class="line">    <span class="comment">// 耳机是否插入</span></span><br><span class="line">    filter.addAction(AudioManager.ACTION_HEADSET_PLUG);</span><br><span class="line">    <span class="comment">// SIM卡广播</span></span><br><span class="line">    filter.addAction(Intent.ACTION_SIM_STATE_CHANGED);</span><br><span class="line">    <span class="comment">// TTY 模式已更改，（文字电话）</span></span><br><span class="line">    filter.addAction(TelecomManager.ACTION_CURRENT_TTY_MODE_CHANGED);</span><br><span class="line">    <span class="comment">// 可用 配置文件</span></span><br><span class="line">    filter.addAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE);</span><br><span class="line">    <span class="comment">// 不可用 配置文件</span></span><br><span class="line">    filter.addAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE);</span><br><span class="line">    <span class="comment">// 删除 配置文件</span></span><br><span class="line">    filter.addAction(Intent.ACTION_MANAGED_PROFILE_REMOVED);</span><br><span class="line">    <span class="comment">/// 添加用户切换操作以更新可能的警报图标</span></span><br><span class="line">    filter.addAction(Intent.ACTION_USER_SWITCHED);</span><br><span class="line">    <span class="comment">// 向处理程序注册接收器</span></span><br><span class="line">    mBroadcastDispatcher.registerReceiverWithHandler(mIntentReceiver, filter, mHandler,UserHandle.ALL);</span><br><span class="line">    <span class="comment">// 注册闹钟已更改</span></span><br><span class="line">    registerAlarmClockChanged(UserHandle.USER_OWNER, <span class="literal">false</span>);</span><br><span class="line">    Observer&lt;Integer&gt; observer = ringer -&gt; mHandler.post(<span class="built_in">this</span>::updateVolumeZen);</span><br><span class="line">    mRingerModeTracker.getRingerMode().observeForever(observer);</span><br><span class="line">    mRingerModeTracker.getRingerModeInternal().observeForever(observer);</span><br><span class="line">    <span class="comment">// 监听用户配置文件更改.</span></span><br><span class="line">    <span class="keyword">try</span> &#123;</span><br><span class="line">        mIActivityManager.registerUserSwitchObserver(mUserSwitchListener, TAG);</span><br><span class="line">    &#125; <span class="keyword">catch</span> (RemoteException e) &#123;</span><br><span class="line">        <span class="comment">// Ignore</span></span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// TTY状态</span></span><br><span class="line">    updateTTY();</span><br><span class="line">    <span class="comment">// 蓝牙状态</span></span><br><span class="line">    updateBluetooth();</span><br><span class="line">    <span class="comment">//eMBMS状态</span></span><br><span class="line">    mIconController.setIcon(mSlotEmbms, R.drawable.stat_sys_embms, <span class="literal">null</span>);</span><br><span class="line">    mIconController.setIconVisibility(mSlotEmbms, <span class="literal">false</span>);</span><br><span class="line">    <span class="comment">// 闹钟</span></span><br><span class="line">    mIconController.setIcon(mSlotAlarmClock, R.drawable.stat_sys_alarm, <span class="literal">null</span>);</span><br><span class="line">    mIconController.setIconVisibility(mSlotAlarmClock, <span class="literal">false</span>);</span><br><span class="line">    <span class="comment">// zen</span></span><br><span class="line">    mIconController.setIcon(mSlotZen, R.drawable.stat_sys_dnd, <span class="literal">null</span>);</span><br><span class="line">    mIconController.setIconVisibility(mSlotZen, <span class="literal">false</span>);</span><br><span class="line">    <span class="comment">// 振动</span></span><br><span class="line">    mIconController.setIcon(mSlotVibrate, R.drawable.stat_sys_ringer_vibrate,</span><br><span class="line">            mResources.getString(R.string.accessibility_ringer_vibrate));</span><br><span class="line">    mIconController.setIconVisibility(mSlotVibrate, <span class="literal">false</span>);</span><br><span class="line">    <span class="comment">// mute</span></span><br><span class="line">    mIconController.setIcon(mSlotMute, R.drawable.stat_sys_ringer_silent,</span><br><span class="line">            mResources.getString(R.string.accessibility_ringer_silent));</span><br><span class="line">    mIconController.setIconVisibility(mSlotMute, <span class="literal">false</span>);</span><br><span class="line">    updateVolumeZen();</span><br><span class="line">    <span class="comment">// cast</span></span><br><span class="line">    mIconController.setIcon(mSlotCast, R.drawable.stat_sys_cast, <span class="literal">null</span>);</span><br><span class="line">    mIconController.setIconVisibility(mSlotCast, <span class="literal">false</span>);</span><br><span class="line">    <span class="comment">// 热点</span></span><br><span class="line">    mIconController.setIcon(mSlotHotspot, R.drawable.stat_sys_hotspot,</span><br><span class="line">            mResources.getString(R.string.accessibility_status_bar_hotspot));</span><br><span class="line">    mIconController.setIconVisibility(mSlotHotspot, mHotspot.isHotspotEnabled());</span><br><span class="line">    <span class="comment">// managed profile</span></span><br><span class="line">    updateManagedProfile();</span><br><span class="line">    <span class="comment">// 数据保护程序</span></span><br><span class="line">    mIconController.setIcon(mSlotDataSaver, R.drawable.stat_sys_data_saver,</span><br><span class="line">            mResources.getString(R.string.accessibility_data_saver_on));</span><br><span class="line">    mIconController.setIconVisibility(mSlotDataSaver, <span class="literal">false</span>);</span><br><span class="line">    <span class="comment">// 隐私 items</span></span><br><span class="line">    <span class="type">String</span> <span class="variable">microphoneString</span> <span class="operator">=</span> mResources.getString(PrivacyType.TYPE_MICROPHONE.getNameId());</span><br><span class="line">    <span class="type">String</span> <span class="variable">microphoneDesc</span> <span class="operator">=</span> mResources.getString(</span><br><span class="line">            R.string.ongoing_privacy_chip_content_multiple_apps, microphoneString);</span><br><span class="line">    mIconController.setIcon(mSlotMicrophone, PrivacyType.TYPE_MICROPHONE.getIconId(),</span><br><span class="line">            microphoneDesc);</span><br><span class="line">    mIconController.setIconVisibility(mSlotMicrophone, <span class="literal">false</span>);</span><br><span class="line">    <span class="type">String</span> <span class="variable">cameraString</span> <span class="operator">=</span> mResources.getString(PrivacyType.TYPE_CAMERA.getNameId());</span><br><span class="line">    <span class="type">String</span> <span class="variable">cameraDesc</span> <span class="operator">=</span> mResources.getString(</span><br><span class="line">            R.string.ongoing_privacy_chip_content_multiple_apps, cameraString);</span><br><span class="line">    mIconController.setIcon(mSlotCamera, PrivacyType.TYPE_CAMERA.getIconId(),</span><br><span class="line">            cameraDesc);</span><br><span class="line">    mIconController.setIconVisibility(mSlotCamera, <span class="literal">false</span>);</span><br><span class="line">    mIconController.setIcon(mSlotLocation, LOCATION_STATUS_ICON_ID,</span><br><span class="line">            mResources.getString(R.string.accessibility_location_active));</span><br><span class="line">    mIconController.setIconVisibility(mSlotLocation, <span class="literal">false</span>);</span><br><span class="line">    <span class="comment">// 传感器关闭</span></span><br><span class="line">    mIconController.setIcon(mSlotSensorsOff, R.drawable.stat_sys_sensors_off,</span><br><span class="line">            mResources.getString(R.string.accessibility_sensors_off_active));</span><br><span class="line">    mIconController.setIconVisibility(mSlotSensorsOff,</span><br><span class="line">            mSensorPrivacyController.isSensorPrivacyEnabled());</span><br><span class="line">    <span class="comment">// 录屏</span></span><br><span class="line">    mIconController.setIcon(mSlotScreenRecord, R.drawable.stat_sys_screen_record, <span class="literal">null</span>);</span><br><span class="line">    mIconController.setIconVisibility(mSlotScreenRecord, <span class="literal">false</span>);</span><br><span class="line">    mRotationLockController.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mBluetooth.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mProvisionedController.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mZenController.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mCast.addCallback(mCastCallback);</span><br><span class="line">    mHotspot.addCallback(mHotspotCallback);</span><br><span class="line">    mNextAlarmController.addCallback(mNextAlarmCallback);</span><br><span class="line">    mDataSaver.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mKeyguardStateController.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mPrivacyItemController.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mSensorPrivacyController.addCallback(mSensorPrivacyListener);</span><br><span class="line">    mLocationController.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mRecordingController.addCallback(<span class="built_in">this</span>);</span><br><span class="line">    mCommandQueue.addCallback(<span class="built_in">this</span>);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>每个icon对应一个updatexxx()，依靠监听和回调机制，可以实现控制状态栏icon图标的显示、隐藏。<br>上述就是图标的加载显示和移除了，那么布局又是在哪添加的呢？？</p>
<hr>
<p>下面接着看 CollapsedStatusBarFragment ，启动方式前面讲过，这里不在重复；看其的 onViewCreated():<br><strong>CollapsedStatusBarFragment #onViewCreated()</strong><br><strong>frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/fragment/CollapsedStatusBarFragment.java</strong></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Override</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">onViewCreated</span><span class="params">(View view, <span class="meta">@Nullable</span> Bundle savedInstanceState)</span> &#123;</span><br><span class="line">    <span class="built_in">super</span>.onViewCreated(view, savedInstanceState);</span><br><span class="line">    mStatusBarFragmentComponent = mStatusBarFragmentComponentFactory.create(<span class="built_in">this</span>);</span><br><span class="line">    mStatusBarFragmentComponent.init();</span><br><span class="line">    mStatusBar = (PhoneStatusBarView) view;</span><br><span class="line">    <span class="type">View</span> <span class="variable">contents</span> <span class="operator">=</span> mStatusBar.findViewById(R.id.status_bar_contents);</span><br><span class="line">    contents.addOnLayoutChangeListener(mStatusBarLayoutListener);</span><br><span class="line">    updateStatusBarLocation(contents.getLeft(), contents.getRight());</span><br><span class="line">    <span class="keyword">if</span> (savedInstanceState != <span class="literal">null</span> &amp;&amp; savedInstanceState.containsKey(EXTRA_PANEL_STATE)) &#123;</span><br><span class="line">        mStatusBar.restoreHierarchyState(</span><br><span class="line">                savedInstanceState.getSparseParcelableArray(EXTRA_PANEL_STATE));</span><br><span class="line">    &#125;</span><br><span class="line">    mDarkIconManager = <span class="keyword">new</span> <span class="title class_">DarkIconManager</span>(view.findViewById(R.id.statusIcons), mFeatureFlags);</span><br><span class="line">    mDarkIconManager.setShouldLog(<span class="literal">true</span>);</span><br><span class="line">    updateBlockedIcons();</span><br><span class="line">    mStatusBarIconController.addIconGroup(mDarkIconManager);</span><br><span class="line">    mSystemIconArea = mStatusBar.findViewById(R.id.system_icon_area);</span><br><span class="line">    mClockView = mStatusBar.findViewById(R.id.clock);</span><br><span class="line">    mOngoingCallChip = mStatusBar.findViewById(R.id.ongoing_call_chip);</span><br><span class="line">    showSystemIconArea(<span class="literal">false</span>);</span><br><span class="line">    showClock(<span class="literal">false</span>);</span><br><span class="line">    initEmergencyCryptkeeperText();</span><br><span class="line">    initOperatorName();</span><br><span class="line">    initNotificationIconArea();</span><br><span class="line">    mSystemEventAnimator =</span><br><span class="line">            <span class="keyword">new</span> <span class="title class_">StatusBarSystemEventAnimator</span>(mSystemIconArea, getResources());</span><br><span class="line">    mCarrierConfigTracker.addCallback(mCarrierConfigCallback);</span><br><span class="line">    mCarrierConfigTracker.addDefaultDataSubscriptionChangedListener(mDefaultDataListener);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p><strong>补充：在 status_bar.xml 中</strong></p>
<ul>
<li>system_icon_area：就是显示蓝牙、wifi、VPN、网卡icon那块区域。</li>
</ul>
<p>接下来注意这几句代码：</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">mDarkIconManager = <span class="keyword">new</span> <span class="title class_">DarkIconManager</span>(view.findViewById(R.id.statusIcons), mFeatureFlags);</span><br><span class="line">mDarkIconManager.setShouldLog(<span class="literal">true</span>);</span><br><span class="line">updateBlockedIcons();</span><br><span class="line"><span class="comment">// 添加图标组</span></span><br><span class="line">mStatusBarIconController.addIconGroup(mDarkIconManager);</span><br></pre></td></tr></table></figure>
<p>上述 <strong>R.id.statusIcons</strong> 即是 <strong>system_icons.xml</strong> 里面的控件。<br><strong>frameworks/base/packages/SystemUI/res/layout/system_icons.xml</strong></p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">LinearLayout</span> <span class="attr">xmlns:android</span>=<span class="string">&quot;http://schemas.android.com/apk/res/android&quot;</span></span></span><br><span class="line"><span class="tag">              <span class="attr">xmlns:systemui</span>=<span class="string">&quot;http://schemas.android.com/apk/res-auto&quot;</span></span></span><br><span class="line"><span class="tag">    <span class="attr">android:id</span>=<span class="string">&quot;@+id/system_icons&quot;</span></span></span><br><span class="line"><span class="tag">    <span class="attr">android:layout_width</span>=<span class="string">&quot;wrap_content&quot;</span></span></span><br><span class="line"><span class="tag">    <span class="attr">android:layout_height</span>=<span class="string">&quot;match_parent&quot;</span></span></span><br><span class="line"><span class="tag">    <span class="attr">android:layout_gravity</span>=<span class="string">&quot;center_vertical|end&quot;</span></span></span><br><span class="line"><span class="tag">    <span class="attr">android:gravity</span>=<span class="string">&quot;center_vertical&quot;</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">com.android.systemui.statusbar.phone.StatusIconContainer</span> <span class="attr">android:id</span>=<span class="string">&quot;@+id/statusIcons&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:layout_width</span>=<span class="string">&quot;0dp&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:layout_weight</span>=<span class="string">&quot;1&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:layout_height</span>=<span class="string">&quot;match_parent&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:paddingEnd</span>=<span class="string">&quot;@dimen/signal_cluster_battery_padding&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:gravity</span>=<span class="string">&quot;center_vertical&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:orientation</span>=<span class="string">&quot;horizontal&quot;</span>/&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">com.android.systemui.battery.BatteryMeterView</span> <span class="attr">android:id</span>=<span class="string">&quot;@+id/battery&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:layout_height</span>=<span class="string">&quot;match_parent&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:layout_width</span>=<span class="string">&quot;wrap_content&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:clipToPadding</span>=<span class="string">&quot;false&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:clipChildren</span>=<span class="string">&quot;false&quot;</span></span></span><br><span class="line"><span class="tag">        <span class="attr">systemui:textAppearance</span>=<span class="string">&quot;@style/TextAppearance.StatusBar.Clock&quot;</span> /&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">LinearLayout</span>&gt;</span></span><br></pre></td></tr></table></figure>
<p>我们接着看 <strong>StatusBarIconControllerImpl</strong> 的构造函数，因为 <strong>mStatusBarIconController</strong> 是一个接口，而其的实现类是 <strong>StatusBarIconControllerImpl</strong>。<br><strong>frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconControllerImpl.java</strong></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Inject</span></span><br><span class="line"><span class="keyword">public</span> <span class="title function_">StatusBarIconControllerImpl</span><span class="params">(</span></span><br><span class="line"><span class="params">        Context context,</span></span><br><span class="line"><span class="params">        CommandQueue commandQueue,</span></span><br><span class="line"><span class="params">        DemoModeController demoModeController,</span></span><br><span class="line"><span class="params">        ConfigurationController configurationController,</span></span><br><span class="line"><span class="params">        TunerService tunerService,</span></span><br><span class="line"><span class="params">        DumpManager dumpManager)</span> &#123;</span><br><span class="line">    <span class="built_in">super</span>(context.getResources().getStringArray(</span><br><span class="line">            com.android.internal.R.array.config_statusBarIcons),context);</span><br><span class="line">    <span class="comment">// 省略部分代码......</span></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>我们可以发现状态栏 icon 加载的图标来源于 <strong>framework/base/core/res/res/values/config.xml</strong> 文件在这里我们就找到了 index 和 slot 的出处，原来在初始化的时候就已经定义好了所有的 slots，然后从 framework 中加载出来，index 就是 string-array 中的顺序。<br><strong>frameworks/base/core/res/res/values/config.xml</strong></p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">string-array</span> <span class="attr">name</span>=<span class="string">&quot;config_statusBarIcons&quot;</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">item</span>&gt;</span><span class="tag">&lt;<span class="name">xliff:g</span> <span class="attr">id</span>=<span class="string">&quot;id&quot;</span>&gt;</span>@string/status_bar_alarm_clock<span class="tag">&lt;/<span class="name">xliff:g</span>&gt;</span><span class="tag">&lt;/<span class="name">item</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">item</span>&gt;</span><span class="tag">&lt;<span class="name">xliff:g</span> <span class="attr">id</span>=<span class="string">&quot;id&quot;</span>&gt;</span>@string/status_bar_rotate<span class="tag">&lt;/<span class="name">xliff:g</span>&gt;</span><span class="tag">&lt;/<span class="name">item</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">item</span>&gt;</span><span class="tag">&lt;<span class="name">xliff:g</span> <span class="attr">id</span>=<span class="string">&quot;id&quot;</span>&gt;</span>@string/status_bar_headset<span class="tag">&lt;/<span class="name">xliff:g</span>&gt;</span><span class="tag">&lt;/<span class="name">item</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">item</span>&gt;</span><span class="tag">&lt;<span class="name">xliff:g</span> <span class="attr">id</span>=<span class="string">&quot;id&quot;</span>&gt;</span>@string/status_bar_data_saver<span class="tag">&lt;/<span class="name">xliff:g</span>&gt;</span><span class="tag">&lt;/<span class="name">item</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">item</span>&gt;</span><span class="tag">&lt;<span class="name">xliff:g</span> <span class="attr">id</span>=<span class="string">&quot;id&quot;</span>&gt;</span>@string/status_bar_ime<span class="tag">&lt;/<span class="name">xliff:g</span>&gt;</span><span class="tag">&lt;/<span class="name">item</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">item</span>&gt;</span><span class="tag">&lt;<span class="name">xliff:g</span> <span class="attr">id</span>=<span class="string">&quot;id&quot;</span>&gt;</span>@string/status_bar_sync_failing<span class="tag">&lt;/<span class="name">xliff:g</span>&gt;</span><span class="tag">&lt;/<span class="name">item</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">item</span>&gt;</span><span class="tag">&lt;<span class="name">xliff:g</span> <span class="attr">id</span>=<span class="string">&quot;id&quot;</span>&gt;</span>@string/status_bar_sync_active<span class="tag">&lt;/<span class="name">xliff:g</span>&gt;</span><span class="tag">&lt;/<span class="name">item</span>&gt;</span></span><br><span class="line">    ................</span><br><span class="line"><span class="tag">&lt;/<span class="name">string-array</span>&gt;</span></span><br></pre></td></tr></table></figure>
<p>然后是 <strong>StatusBarIconControllerImpl.java</strong> 这个控制器来控制 icon 的加载显示和移除。</p>

      
      <blockquote>
        
        <strong>本文链接：</strong><br><a href="http://longzhiye.top/2024/01/28/2024-01-28/">http://longzhiye.top/2024/01/28/2024-01-28/</a>
      </blockquote>
    </div>
    <footer class="mdui-card-actions">
      
        <a class="mdui-ripple article_categories-link" href="/categories/%E6%8A%80%E6%9C%AF/">技术</a>
      
      
        <a class="mdui-ripple article_tags-link" href="/tags/Android/" rel="tag">Android</a><a class="mdui-ripple article_tags-link" href="/tags/framework/" rel="tag">framework</a>
      
    </footer>
    
  </article>
  
<script src="//cdn.bootcdn.net/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="//cdn.bootcdn.net/ajax/libs/fancybox/3.5.7/jquery.fancybox.min.js"></script>

  <script>$("#main article .mdui-card-content img.fancybox").on("click",function(e){$.fancybox.open({src:$(this).attr("src")});});</script>


  <nav id="paginator">
    
      <a rel="prev" class="extend prev" href="/2024/02/03/2024-02-03/">
        <button aria-label="prev" class="mdui-btn mdui-btn-raised mdui-btn-icon mdui-color-theme-accent mdui-ripple"><i class="mdui-icon material-icons">arrow_back</i></button>
        <span class="mdui-p-x-3" mdui-tooltip="{content: 'Android SystemUI 通知面板实现'}">上一篇</span>
      </a>
    
    <div class="spacer"></div>
    
      <a rel="next" class="extend next" href="/2024/01/27/2024-01-27/">
        <span class="mdui-p-x-3" mdui-tooltip="{content: 'Android 14 NotificationChannels与Notification的加载流程'}">下一篇</span>
        <button aria-label="next" class="mdui-btn mdui-btn-raised mdui-btn-icon mdui-color-theme-accent mdui-ripple"><i class="mdui-icon material-icons">arrow_forward</i></button>
      </a>
    
  </nav>





</main>
  <footer id="footer" class="mdui-m-t-5 mdui-p-y-3 mdui-color-theme">
  <div class="mdui-p-y-0 mdui-text-center">
    
    
    
    
    
    
    
      <a href="http://github.com/longzhiye" target="_blank" class="mdui-btn mdui-btn-icon mdui-text-color-theme-a100"><i class="mdui-icon iconfont">&#xe7ab;</i></a>
    
    
    
      <a href="https://www.zhihu.com/people/long-zhi-xie-61" target="_blank" class="mdui-btn mdui-btn-icon mdui-text-color-theme-a100"><i class="mdui-icon iconfont">&#xe6c0;</i></a>
    
    
    
      <a href="tencent://tencent:////message/?uin=951898105&Menu=yes" target="_blank" class="mdui-btn mdui-btn-icon mdui-text-color-theme-a100"><i class="mdui-icon iconfont">&#xe651;</i></a>
    
    
  </div>
  <div class="mdui-p-y-1 mdui-text-center">
    Copyright &copy; 2022 - 2025 龙之叶<br>
    Powered by <a href="https://hexo.io/" target="_blank" class="mdui-text-color-theme-accent">Hexo</a>
    <br>
      <span id="busuanzi_container_site_pv" style="display: none;"><i class="iconfont">&#xe7fd;</i> <span id="busuanzi_value_site_pv"></span></span> &nbsp;&nbsp;
      <span id="busuanzi_container_site_uv" style="display: none;"><i class="iconfont">&#xe601;</i> <span id="busuanzi_value_site_uv"></span></span>
    
  </div>
</footer>

  <button id="gotop" class="mdui-fab mdui-fab-fixed mdui-fab-hide mdui-color-theme-accent mdui-ripple"><i class="mdui-icon material-icons">arrow_upward</i></button>
  <script async src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>
  
<script src="/js/mdui.js"></script>
<script src="/js/script.js"></script>

  
<script src="/custom.js"></script>

</body>
</html>
